Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Development and application of a Lagrangian model to determine the origins of ozone episodes in the UK
AU - Strong, Jonathan
AU - Whyatt, Duncan
AU - Hewitt, C. N.
AU - Derwent, R. G.
PY - 2010/2
Y1 - 2010/2
N2 - This paper describes the further development and application of the Edinburgh-Lancaster Model for Ozone (ELMO). We replace straight-line back-trajectories with trajectories and associated meteorology supplied by the US National Oceanic and Atmospheric Administration Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) service to allow more realistic modelling of specific UK ozone episodes. We call this ELMO-2. Model performance is rigorously tested against observed ozone concentrations for two episodes recorded across 14 rural UK monitoring stations during the spring and summer of 1995. For both episodes, the afternoon concentrations (usually coinciding with the daily maxima) are captured well by the model and the diurnal ozone cycle is reproduced, although the amplitude in concentrations is generally smaller than the observed. The summer episode is investigated further through indicator species analysis and source attribution, and found to be mainly VOC-limited. European emissions account for the majority of ozone production. We demonstrate how improved modelling leads to better understanding of regional and local ozone production across the UK under episodic conditions. (C) 2009 Elsevier Ltd. All rights reserved.
AB - This paper describes the further development and application of the Edinburgh-Lancaster Model for Ozone (ELMO). We replace straight-line back-trajectories with trajectories and associated meteorology supplied by the US National Oceanic and Atmospheric Administration Hybrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) service to allow more realistic modelling of specific UK ozone episodes. We call this ELMO-2. Model performance is rigorously tested against observed ozone concentrations for two episodes recorded across 14 rural UK monitoring stations during the spring and summer of 1995. For both episodes, the afternoon concentrations (usually coinciding with the daily maxima) are captured well by the model and the diurnal ozone cycle is reproduced, although the amplitude in concentrations is generally smaller than the observed. The summer episode is investigated further through indicator species analysis and source attribution, and found to be mainly VOC-limited. European emissions account for the majority of ozone production. We demonstrate how improved modelling leads to better understanding of regional and local ozone production across the UK under episodic conditions. (C) 2009 Elsevier Ltd. All rights reserved.
KW - ELMO
KW - HYSPLIT
KW - Source attribution
KW - Episode sensitivity
KW - ATMOSPHERIC CHEMISTRY
KW - DRY DEPOSITION
KW - SURFACE OZONE
KW - QUALITY
KW - EUROPE
KW - HYDROCARBONS
KW - SUMMER
KW - SCALE
KW - TRAJECTORIES
KW - STRATEGIES
U2 - 10.1016/j.atmosenv.2009.11.019
DO - 10.1016/j.atmosenv.2009.11.019
M3 - Journal article
VL - 44
SP - 631
EP - 641
JO - Atmospheric Environment
JF - Atmospheric Environment
SN - 1352-2310
IS - 5
ER -